Results 131 to 140 of about 32,070 (302)

Tipping Points of Space Debris in Low Earth Orbit

International Journal of the Commons
Global services like navigation, communication, and Earth observation have increased dramatically in the 21st century due to advances in outer space industries.
Keiko Nomura, Simon Rella, Haily Merritt, Mathieu Baltussen, Darcy Bird, Annika Tjuka, Dan Falk   +6 more
doaj   +1 more source

Dose‐dependent hepatotoxicity of hydrogen peroxide in HepG2 cells and its modulation by CYP450 induction

FEBS Open Bio, EarlyView.
NMR metabolomics revealed concentration‐dependent metabolic perturbations in HepG2 cells exposed to H2O2. Rifampicin pretreatment enhanced metabolic competence, attenuated toxin‐induced alterations and produced metabolite profiles more consistent with human liver physiology, supporting the use of CYP450‐induced HepG2 models for improved in vitro ...
Maren Jinks, Garth L. Maker, Emily C. Davies, Berin A. Boughton, Samantha Lodge   +4 more
wiley   +1 more source

Modeling Ground Sensor Acquisitions of Low Earth Orbit Objects [PDF]

, 2010
The United States Strategic Command (STRATCOM) utilizes a sensor network to accomplish several of its missions. These missions include missile defense, missile warning, intelligence collection, and space surveillance. For the task of space surveillance,
Bjerkaas, James Kevin
core  

Adenosine triphosphate as a modulator of protein interactions and stability

FEBS Open Bio, EarlyView.
ATP is best known as the cell's energy currency, but it also shapes how proteins fold, interact, aggregate and form biomolecular condensates. This review explains the emerging physical principles behind these effects, including weak binding to charged protein regions, magnesium‐dependent behaviour and concentration‐dependent control of protein ...
Shuyuan Tan, Robin Curtis
wiley   +1 more source

OPERATIONAL ASPECTS OF ORBIT DETERMINATION WITH GPS FOR SMALL SATELLITES WITH A SAR PAYLOAD. [PDF]

, 2005
Scientific small satellite missions for remote sensing with Synthetic Aperture Radar (SAR) payloads or high accuracy optical sensors, pose very strict requirements on the accuracy of the reconstructed satellite positions, velocities and accelerations ...
Zehetbauer, Tino, Neff, Thomas, De Florio, Sergio   +2 more
core  

Concepts and applications of aerodynamic attitude and orbital control for spacecraft in very low earth orbit [PDF]

, 2019
Spacecraft operations below 450km, namely Very Low Earth Orbit (VLEO), can offer significant advantages over traditional low Earth orbits, for example enhanced ground resolution for Earth observation, improved communications latency and link budget, or ...
Rodríguez Donaire, Silvia, Roberts, Peter C.E, Livadiotti, Sabrina, Sureda Anfres, Miquel, García-Almiñana, Daniel, Crisp, Nicholas H.   +5 more
core   +2 more sources

Risk Prediction Models for Recurrence After Curative Treatment of Early‐Stage or Locally Advanced Lung Cancer: A Systematic Review

Aging and Cancer, EarlyView.
This systematic review synthesizes prognostic models for survival and recurrence in resected non‐small cell lung cancer. While many models demonstrate moderate to good discrimination, few are externally validated and reporting quality is variable, limiting clinical applicability and highlighting the need for robust, transparent model development ...
Evangeline Samuel, S. Tissera, E. Paul, J. Zalcberg, R. G. Stirling   +4 more
wiley   +1 more source

Mission analysis of Hevelius-lunar microsatellite mission [PDF]

, 2005
This paper describes the mission analysis and design of the 'Hevelius - Lunar Microsatellite Mission'. The main goal of the overall mission is to place a net-lander on the far side of the Moon to perform some scientific experiments.
Colombo, Camilla, Vasile, Massimiliano, Ceriotti, Matteo, Scarì, Ettore   +3 more
core  

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

Aging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

Self‐Regulated Learning Meets AI: Reinterpreting Self‐Regulation, Co‐Regulation, and Socially Shared Regulation in Human–AI Interaction

New Directions for Adult and Continuing Education, EarlyView.
ABSTRACT Advancing artificial intelligence (AI) has transformed learning and work, yet higher education and professional development programs have not systematically equipped learners for AI‐prevalent environments. This lack of preparation creates uncertainty regarding control, responsibility, trust, and accountability.
Moon‐Heum Cho, Jerusalem Merkebu
wiley   +1 more source